Head-to-Tail Oxime Cyclization of Oligodeoxynucleotides for the Efficient Synthesis of Circular DNA Analogues

Abstract
A convenient strategy for the synthesis of the analogue of cyclic oligodeoxyribonucleotides is presented. The cyclization of the oligonucleotide was accomplished through intramolecular oxime bond formation between a 5‘-oxyamine moiety and a 3‘-aldehydic group.